CN105546265A - Pressure maintaining and relieving device of gas transmission pipeline - Google Patents
Pressure maintaining and relieving device of gas transmission pipeline Download PDFInfo
- Publication number
- CN105546265A CN105546265A CN201510910972.9A CN201510910972A CN105546265A CN 105546265 A CN105546265 A CN 105546265A CN 201510910972 A CN201510910972 A CN 201510910972A CN 105546265 A CN105546265 A CN 105546265A
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- China
- Prior art keywords
- soft bag
- gas
- pressure
- cell body
- closed cell
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/07—Arrangement or mounting of devices, e.g. valves, for venting or aerating or draining
Abstract
The invention discloses a pressure maintaining and relieving device of a gas transmission pipeline. An air inlet pipe is arranged on the side wall of a closed pool body in a penetrating manner, and an inflatable soft bag is arranged inside the closed pool body; the air inlet pipe is inserted into the soft bag and is in sealed connection with the soft bag; and a one-way valve is arranged on the upper bag wall of the soft bag, and a pressure relieving pipe which can be inserted into the one-way valve and opens the one-way valve is arranged on the upper wall of the closed pool body in a penetrating manner. A joint of the gas transmission pipeline is communicated with the air inlet pipe through a pipeline, and therefore pressure of gas in the gas transmission pipeline is the same with the pressure of gas in the soft bag. The soft bag plays a role in controlling pressure and collecting gas; when the pressure of the gas in the gas transmission pipeline is continuously increased, the one-way valve moves upwards until the pressure relieving pipe completely penetrates the one-way valve, and therefore the interior of the soft bag is communicated with the exterior through the pressure relieving valve, overpressure gas is rapidly exhausted into the atmosphere through the pressure relieving pipe, and a role in outward pressure relieving is played; and in addition, when the soft bag is expanded to a certain degree, the soft bag will crack in advance of the gas transmission pipeline, the gas obtained after cracking of the bag is exhausted from the pressure reliving pressure, and the limited explosion prevention effect is achieved.
Description
Technical field
The present invention relates to gas safe transport field, be specifically related to a kind of gas pipeline pressurize pressure relief device.
Background technique
Rock gas refers to the naturally occurring tangential gas of occurring in nature, comprises the gas (comprising casing-head gas, reservoir gas, gas of mud volcano, coal-seam gas and biological generation gas etc.) that in atmosphere, hydrosphere, lithosphere, various natural process is formed.And the definition of general for a long time " rock gas " of people, be define from the narrow sense of energy point of view, refer to the natural mixture containing hydro carbons in stratum and non-hydrocarbon gases.In petroleum geology, be often referred to casing-head gas and reservoir gas.Its composition based on hydro carbons, and contains non-hydrocarbon gas.
Rock gas is contained in underground porous gap rock stratum, comprises casing-head gas, reservoir gas, coal-seam gas, gas of mud volcano and biological generation gas etc., also has a small amount of for coal seam.It is high-grade fuel and industrial chemicals.Rock gas predominant use makes fuel, can manufacture carbon black, chemicals and liquefied petroleum gas (LPG), and the propane produced by rock gas, butane are the important source material of modern industry.Rock gas is primarily of gaseous state low molecular hydrocarbons and non-hydrocarbon gas mixing composition.Rock gas main component alkane, wherein methane accounts for the overwhelming majority, separately has a small amount of ethane, propane and butane, generally has the rare gas of hydrogen sulfide, carbon dioxide, nitrogen and aqueous vapor and a small amount of carbon monoxide and trace in addition, as helium and argon etc.Rock gas, before delivering to end user, for helping Leak testtion, also adds smell to rock gas with mercaptan, tetrahydrothiophene etc.
At present, the transport of pipe natural gas adopts the mode of gas pipeline.The cost of pipeline transport is lower, can carry out long-distance transportation.But pipeline transport solves except the sealing of joint and leakage problem except needing, also need to prevent ducted gas pressure from increasing sharply and the explosion issues that causes.Under normal circumstances, be all provided with safety relief valve at the starting point of pipeline, be used for controlling the pressure of pipeline.But at the intermediate section not effective pressure-relief measure of pipeline, once manifold pressure is excessive, by very easily causing the damage of pipeline, cause security incident.And the intermediate section of pipeline is generally be embedded in underground, even if increase Decompression valves, also there is the problem of installing not easily.Moreover, the working principle of Decompression valves be directly by the gas discharging of overvoltage in air, this portion gas can not be recycled, cause waste.
Summary of the invention
The object of the present invention is to provide a kind of gas pipeline pressurize pressure relief device, be arranged on gas pipeline, play the effect of safety anti-explosive and recovery pressure release gas.
For achieving the above object, technological scheme of the present invention is: gas pipeline pressurize pressure relief device, comprise and be arranged on ground closed cell body, described closed cell body sidewall runs through and is provided with suction tude, the inside of described closed cell body is provided with inflatable soft bag, and described suction tude to be inserted in soft bag and is tightly connected with soft bag; The upper bag wall of described soft bag is provided with one-way valve, and the upper wall of described closed cell body runs through the relief tube being provided with and can inserting also open check valve.
When adopting technique scheme, closed cell body is arranged on the top of buried gas pipeline, and the joint of gas pipeline is communicated with suction tude by pipeline, make the gas pressure in gas pipeline identical with the gas pressure in soft bag.When the gas pressure in gas pipeline increases, gas enters into soft bag by suction tude, makes the gas pressure in soft bag remain consistent with the gas pressure in gas pipeline.After the air pressure in gas pipeline reduces, the gas be stored in soft bag can reenter in gas pipeline.Soft like this bag just serves pilot pressure and collects the effect of gas, and the structure of relatively traditional Decompression valves, can effectively utilize pressure release gas.Moreover, when the gas pressure in gas pipeline continues to increase, the volume of soft bag continues to become large, until the one-way valve on the upper bag wall of soft bag moves up until relief tube passes completely through one-way valve, the inside of soft bag is in communication with the outside by Decompression valves, the gas of overvoltage is entered rapidly in air by relief tube, plays the effect of external pressure release.In addition, if do not coordinate pressure release between the one-way valve on soft bag and relief tube, when soft bag volumetric expansion to a certain extent, because the intensity of soft bag is well below the intensity of gas pipeline, soft bag can break prior to gas pipeline, gas after breaking is discharged from Decompression valves, plays the pressure release effect that the limit is explosion-proof.
Further improvement project, the upper wall of described closed cell body also runs through and is provided with overflow pipe, and described overflow pipe is provided with the water intake be communicated with closed cell body, is hinged with the unidirectional baffle plate of closed water intake in described overflow pipe; The upper bag wall of described soft bag is provided with and can inserts overflow pipe and the push rod backing down unidirectional baffle plate.In use, in closed cell body, be full of water, make the air pressure in the air pressure in gas pipeline, soft bag and the hydraulic pressure in closed cell body be in the identical state of pressure all the time.When the gas pressure in software increases, and cannot by relief tube to external world pressure release time, push rod on soft bag moves on continuing, and backs down the unidirectional baffle plate on overflow pipe, is discharged by the water in closed cell body under the effect of hydraulic pressure by overflow pipe.On the one hand, the water of discharging from overflow pipe can play the effect of staff on prompting bottom surface, on the other hand, by discharging water, reduces hydraulic pressure, makes soft bag can continue to expand, until soft bag breaks.After soft bag breaks, gas can be discharged by relief tube and overflow pipe, plays the effect of pressure release.
Further improvement project, the lower end of overflow pipe is threeway joint, and described water intake is positioned on the horizontal detail of threeway joint, and described unidirectional baffle plate is positioned on the perpendicular upper detail of threeway joint.Threeway joint is set, the water intake that special can be had, and push rod need not be allowed to insert in threeway joint by water intake, improve the reliability of total.
Further improvement project, the bottom of described one-way valve arranges clapper, and the distance between the lower end surface of described relief tube and clapper is less than the distance between the upper-end surface of push rod and unidirectional baffle plate.Clapper structure is simple, can play the effect of unidirectional blocking.In addition, above-mentioned setting, can guarantee that relief tube has precedence over relief tube work under normal circumstances, make whole assembly first pressure release, can not normally pressure release time undertaken warning and pressure release by spill pipe draining.
Further improvement project, the opening end that described relief tube and overflow pipe stretch out closed cell body is horizontally disposed with.Opening end is horizontally disposed with and can prevents sandstone from directly entering wherein, plays protective conduit and anti-blocking effect.
Further improvement project, the opening end of described relief tube and overflow pipe towards the opposite.Arrange contrary to there being larger installing space, and can the spacing of relief tube and overflow pipe be arranged less.
Further improvement project, the bottom of described soft bag is fixedly connected with the bottom of closed cell body.This arranges the position that can limit soft bag, and limits the expansion direction of soft bag, makes pressure release more accurately with reliable.
Further improvement project, the upper end of described unidirectional baffle plate is fixedly connected with wire rope, and overflow pipe is stretched out in the end of described wire rope.Wire rope is set, unidirectional baffle plate can be opened by the end pullling wire rope, can be used for detecting hydraulic pressure or the priming petock wherein of closed cell body inside.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation:
Fig. 1 is the structural representation of gas pipeline pressurize pressure relief device embodiment of the present invention;
Fig. 2 is the structural representation of Fig. 1 under pressure release state.
Embodiment
Reference character: closed cell body 1, sealing gasket 11, suction tude 2, soft bag 3, one-way valve 4, relief tube 5, push rod 6, overflow pipe 7.
As shown in Figure 1, gas pipeline pressurize pressure relief device of the present invention, include and be arranged on ground closed cell body 1, closed cell body 1 can adopt reinforced concrete cast in situs, also can adopt prefabrication, field erected mode.Closed cell body 1 is built above gas pipeline, is provided with a suction tude 2 in the side of closed cell body, and suction tude 2 is reserved adaptor tube for the threeway of the gas pipeline with land burial and is connected.In closed cell body 1, be provided with a closed soft bag 3, suction tude 2 stretches in soft bag 3, and suction tude 2 is closed with soft bag 3 and is connected.The bottom of soft bag 3 is fixed on the bottom of closed cell body 1, and the top of soft bag 3 is provided with an one-way valve 4, and one-way valve 4 is provided with clapper, and clapper can only back down from top.A relief tube 5 is provided with above closed cell body 1.The top wall of closed cell body 1 is provided with sealing gasket 11, and relief tube 5 inserts in sealing gasket 11, ensures No leakage gap between relief tube 5 and closed cell body 1 by sealing gasket 11.The lower end of relief tube 5 is inserted in the one-way valve 4 on soft bag 3, and in the normal state, leaves gap between the lower end surface of relief tube 5 and the clapper of one-way valve 4.In addition, above soft bag 3, the side being positioned at one-way valve 4 is fixed with a vertical push rod 6.Above closed cell body 1 on wall corresponding push rod 6 position on an overflow pipe 7 is installed, the upper end of push rod 6 is inserted from the lower end mouth of overflow pipe 7.The hypomere of overflow pipe 7 is threeway joints, the mouth of pipe of transverse pipe of threeway joint and the inner space of closed cell body 1.The upper opening place of threeway joint is provided with a unidirectional baffle plate, on the inwall that this unidirectional panel hinge saves in threeway, and unidirectional baffle plate can rotate up opens threeway joint, in rotating shaft place of unidirectional baffle plate, torsion spring is installed, forces unidirectional baffle plate to be rotated down by torsion spring and close threeway joint at horizontal position.When designing, the distance between the upper-end surface of push rod 6 and unidirectional baffle plate is greater than the distance below relief tube 5 lower end surface and one-way valve 4 between clapper.
As shown in Figure 2, during use, suction tude 2 and the relief fittings of the gas pipeline of land burial are utilized pipeline communication, and fill water in closed cell body 1.Because suction tude 2 is inserted in soft bag 3, make the air pressure in soft bag 3 identical with the air pressure in gas pipeline.When the gas pressure in gas pipeline increases, gas enters into soft bag 3, makes the volumetric expansion of soft bag 3.Owing to having filled water in whole closed cell body 1, and whole closed cell body 1 forms a closed space, after the volumetric expansion of soft bag 3, hydraulic pressure in closed cell body 1 can increase, remain the air pressure in soft bag 3, the air pressure in gas pipeline, the hydraulic pressure three in closed cell body 1 is equal.When the air pressure in gas pipeline no longer continues to increase, the volume of whole soft bag 3 stops expanding, and soft bag 3 also serves the effect of collecting gas, when the air pressure in gas pipeline recovers normally, gas in soft bag 3 can enter into gas pipeline, serves the effect of pressure regulation and collection pressure release gas.Moreover, when the gas pressure in gas pipeline continues to increase, the volume prolonged expansion of soft bag 3, the bag wall on soft bag 3 top is made to continue to move up, in the process, the degree of depth that relief tube 5 on closed cell body 1 inserts in the one-way valve 4 on soft bag 3 constantly increases, until relief tube 5 penetrates the clapper of one-way valve 4, relief tube 5 is communicated with soft bag 3, gas in soft bag 3 is discharged continually from relief tube 5, play the effect of limit pressure release, blast after placing whole device pressure overload.Be in safe consideration, if when above-mentioned one-way valve 4 and relief tube 5 do not play the effect of limit pressure release, need Observations Means intuitively.Owing to also having a push rod 6 on soft bag 3, in the process that soft bag 3 expands, the length that push rod 6 inserts threeway joint on overflow pipe 7 also constantly increases, until when the length that push rod 6 inserts is enough to back down the unidirectional baffle plate on threeway joint, water in closed cell body 1, under the effect of hydraulic pressure, saved by threeway, flow out from overflow pipe 7.On the one hand, ground staff can judge the working state of one-way valve 4 and relief tube 5 by the current flowed out from overflow pipe 7, moreover, by overflow pipe 7, also can play the effect to the water pressure release in closed cell body 1, soft bag 3 can be alleviated in a short time, make it continue to expand.If when cannot process in time, when the water in closed cell body 1 is discharged to certain time, soft bag 3 meeting prolonged expansion is until whole soft bag 3 breaks, after breaking, gas in soft bag 3 and gas pipeline by relief tube 5 and overflow pipe 7 directly pressure release, will prevent security incident.
In addition, be fixedly connected with wire rope in the upper end of unidirectional baffle plate, overflow pipe 7 is stretched out in the end of described wire rope.Wire rope is set, unidirectional baffle plate can be opened by the end pullling wire rope, can be used for detecting the hydraulic pressure of closed cell body 1 inside, by hydraulic pressure data determination barometric information, or in closed cell body 1 water after running off in a large number wherein perfusion add water.
Above-described is only the preferred embodiment of the present invention; should be understood that; for a person skilled in the art; without departing from the inventive concept of the premise; some distortion and improvement can also be made; these also should be considered as protection scope of the present invention, and these all can not affect effect of the invention process and practical applicability.
Claims (8)
1. gas pipeline pressurize pressure relief device, it is characterized in that, comprise and be arranged on ground closed cell body, described closed cell body sidewall runs through and is provided with suction tude, the inside of described closed cell body is provided with inflatable soft bag, and described suction tude to be inserted in soft bag and is tightly connected with soft bag; The upper bag wall of described soft bag is provided with one-way valve, and the upper wall of described closed cell body runs through the relief tube being provided with and can inserting also open check valve.
2. gas pipeline pressurize pressure relief device according to claim 1, it is characterized in that, the upper wall of described closed cell body also runs through and is provided with overflow pipe, and described overflow pipe is provided with the water intake be communicated with closed cell body, is hinged with the unidirectional baffle plate of closed water intake in described overflow pipe; The upper bag wall of described soft bag is provided with and can inserts overflow pipe and the push rod backing down unidirectional baffle plate.
3. gas pipeline pressurize pressure relief device according to claim 2, is characterized in that, the lower end of overflow pipe is threeway joint, and described water intake is positioned on the horizontal detail of threeway joint, and described unidirectional baffle plate is positioned on the perpendicular upper detail of threeway joint.
4. the gas pipeline pressurize pressure relief device according to Claims 2 or 3, it is characterized in that, the bottom of described one-way valve arranges clapper, and the distance between the lower end surface of described relief tube and clapper is less than the distance between the upper-end surface of push rod and unidirectional baffle plate.
5. gas pipeline pressurize pressure relief device according to claim 4, it is characterized in that, the opening end that described relief tube and overflow pipe stretch out closed cell body is horizontally disposed with.
6. gas pipeline pressurize pressure relief device according to claim 5, is characterized in that, the opening end of described relief tube and overflow pipe towards the opposite.
7. gas pipeline pressurize pressure relief device according to claim 1, is characterized in that, the bottom of described soft bag is fixedly connected with the bottom of closed cell body.
8. gas pipeline pressurize pressure relief device according to claim 2, is characterized in that, the upper end of described unidirectional baffle plate is fixedly connected with wire rope, and overflow pipe is stretched out in the end of described wire rope.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510910972.9A CN105546265B (en) | 2015-12-10 | 2015-12-10 | Gas pipeline pressurize pressure relief device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510910972.9A CN105546265B (en) | 2015-12-10 | 2015-12-10 | Gas pipeline pressurize pressure relief device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105546265A true CN105546265A (en) | 2016-05-04 |
| CN105546265B CN105546265B (en) | 2017-09-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510910972.9A Expired - Fee Related CN105546265B (en) | 2015-12-10 | 2015-12-10 | Gas pipeline pressurize pressure relief device |
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| Country | Link |
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| CN (1) | CN105546265B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110200484A (en) * | 2018-08-23 | 2019-09-06 | 华帝股份有限公司 | Pressure relief structure and electric steam box using same |
| CN112098101A (en) * | 2020-09-23 | 2020-12-18 | 常州大学 | Pressure relief and gas collection device for constant volume combustion bomb |
| CN113418082A (en) * | 2021-07-30 | 2021-09-21 | 江苏致乐管业科技有限公司 | Compression-resistant PVC-U pipe |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| EP2264288A1 (en) * | 2009-06-11 | 2010-12-22 | Thermonetics LTD. | System for efficient fluid depressurisation |
| CN203115502U (en) * | 2013-01-11 | 2013-08-07 | 淮南市宝鼎工贸有限责任公司 | Water seal type gas pressure-limiting device |
| CN203571145U (en) * | 2013-06-30 | 2014-04-30 | 金川集团股份有限公司 | Emergency pressure regulator of long-distance conveying pipeline |
| CN204187201U (en) * | 2014-10-23 | 2015-03-04 | 张兴贵 | Safety anti-explosive pipeline |
| CN204187281U (en) * | 2014-10-29 | 2015-03-04 | 刘复合 | A kind of pressure relief system for high-pressure gas long distance pipeline |
-
2015
- 2015-12-10 CN CN201510910972.9A patent/CN105546265B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2264288A1 (en) * | 2009-06-11 | 2010-12-22 | Thermonetics LTD. | System for efficient fluid depressurisation |
| CN203115502U (en) * | 2013-01-11 | 2013-08-07 | 淮南市宝鼎工贸有限责任公司 | Water seal type gas pressure-limiting device |
| CN203571145U (en) * | 2013-06-30 | 2014-04-30 | 金川集团股份有限公司 | Emergency pressure regulator of long-distance conveying pipeline |
| CN204187201U (en) * | 2014-10-23 | 2015-03-04 | 张兴贵 | Safety anti-explosive pipeline |
| CN204187281U (en) * | 2014-10-29 | 2015-03-04 | 刘复合 | A kind of pressure relief system for high-pressure gas long distance pipeline |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110200484A (en) * | 2018-08-23 | 2019-09-06 | 华帝股份有限公司 | Pressure relief structure and electric steam box using same |
| CN112098101A (en) * | 2020-09-23 | 2020-12-18 | 常州大学 | Pressure relief and gas collection device for constant volume combustion bomb |
| CN113418082A (en) * | 2021-07-30 | 2021-09-21 | 江苏致乐管业科技有限公司 | Compression-resistant PVC-U pipe |
| CN113418082B (en) * | 2021-07-30 | 2022-01-28 | 江苏致乐管业科技有限公司 | Compression-resistant PVC-U pipe |
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| CN105546265B (en) | 2017-09-15 |
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Granted publication date: 20170915 Termination date: 20171210 |